Poly Rules! vs Duelitaire
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Poly Rules!
A challenging sorting game where the rules dynamically change as you progress. It offers increasingly complex scenarios to test your cognitive abilities. Researchers can inquire about using the game for studies.
- Dynamic rule changes
- Increasingly complex scenarios
- Cognitive benefit focus
- Research support available
- Log storage and analytics (coming soon)
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PolyRules is a challenging sorting game where the rules change as you play. As you progress through the game you will encounter increasingly more complicated scenarios that challenge you in ways you can't imagine. The current release is our first prototype and we will update the game semi-frequently as we move towards a design that features tried and true game design to facilitate the cognitive benefits this game aids to provide. Researchers who are interested in using this game for their own studies please reach out to us to us through our support page for more information on how to best use this App. We have several ways to support you including a central server to store logs and automatic analytics which will be implemented in the coming weeks.
Duelitaire
Engage in strategic, turn-based card battles where skill is paramount. Customize your deck with unique card, field, and avatar designs. Challenge opponents in various modes, from standard PvP to custom local duels and skill-testing challenges.
- Turn-based PvP card battles
- Customizable card, field, and avatar designs
- Standard and custom duel modes
- Challenging single-player modes
- Skill-based strategy gameplay
- Achievement and leveling system
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Collect different cards designs, different field designs, and different avatar icon designs and get ready to duel! In this strategy card game, skill defines your success — luck is only a small factor. Mix and match iconic cards designs, rare field designs, unique avatar icons and get ready to outplay your opponent. MASTER THE GAMEPLAY Dynamic, turn-based gameplay means you can always react and counter, but so can your opponent. Choose from multiple unique card designs for your deck, each with a different concept inspired by an overall theme. Every turn counts!! Enter the duel with focus and if you play smart, the duel becomes even more epic with moves and counter moves done by both players. STRATEGIZE, ADAPT, ALWAYS A NEW WAY TO PLAY Explore how different strategies work together to give you unique advantages against your opponents. Adapt and experiment with frequent new releases in an always-evolving meta. STANDARD PLAY Start a standardized duel with other players where each turn you have 30 seconds to strategize your play and counter play. Be wary of your time and avoid misplays that will give your opponent the upper hand. CUSTOM PLAY Choose to duel locally with a computer or friend. The computer is an expert at this game, choose the difficulty carefully. Enter cost matches against other players or against the computer in hard mode. The challenge is yours to make. CHALLENGE MODE There are 12 Challenges to test your skills. A player will get to choose how many challenges they want in a match and the difficulty of the bot they are playing against. Take the challenge. How many can you stack? 1. No Ace - Only the Bot gets Aces 2. Four Kings - You get all 4 Kings 3. Four Queens - You get all 4 Queens 4. Jack Of All Trades - You get all 4 Jacks 5. Add5 - Begin with 5 more cards! 6. Add7 - Begin with 7 more cards! 7. No Fair - The decks are dealt poorly! 8. 1-2 Switch - The Bot goes first! 9. No Time To Think - Only 5 seconds to make a move! 10. No Foundation - You can't play cards to the Foundation - although the Bot still can! 11. No Waste - You can't play cards to the Waste - although the Bot still can! 12. Random Columns Missing - A random column is unusable by the player - although the Bot still can! AWARD SYSTEM Prove your skills by unlocking achievements. Beating challenges and level up to unlock various rewards. LEVEL SYSTEM Show other players your mastery in Duelitaire by flexing about you player level. The more you play the more experience you gain. This experience will go towards your level. PLAY TO WIN, NOT PAY TO WIN Earn cards for free through our PvP battle system or buy exactly what you want with Duellions—a player is in control of their collection, and you’ll never pay for an item you don’t desire. While there’s always the option to purchase a specific design whether be it a card, field, or avatar icon, you can easily complete your collection by taking the risk and dueling other players in custom PvP matches !!! Victory or defeat, each battle brings experience and progress.
Screenshots
Verdict
The clearest difference is in-app purchases: Poly Rules! at none against Duelitaire's 4. Poly Rules! also leads on iOS requirement (12.0 vs 15.0). Duelitaire's advantage is review sentiment (94% vs 80%) and ratings volume (48 vs 13). On price, rating, update cadence and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Duelitaire sells 4 one-off in-app purchases. Poly Rules! asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.8 for Poly Rules! against 4.9 for Duelitaire. Both are backed by a comparable volume of ratings — 13 and 48 respectively. Written reviews are what separate them: 80% of Poly Rules!'s written reviews are positive against 94% of Duelitaire's.
Poly Rules! ships an update monthly, Duelitaire every 3 weeks. The most recent releases landed on October 11, 2026 and October 15, 2026 respectively.
| Parameter | Poly Rules! | Duelitaire |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (13 ratings) | 4.9 (48 ratings) — better |
| Positive reviews | 80.0% of reviews | 94.4% of reviews — better |
| Number of ratings | 13 | 48 — better |
| Update frequency | Monthly | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 111 MB | 314 MB |
| Age rating | 4+ | 4+ |
| Developer | Northeastern University Information Services | About Us LLC |
Customer experience
Poly Rules!
Duelitaire
In-app purchases
Poly Rules!
No in-app purchases
Duelitaire
- 300 Duellions$0.99
- 2000 Duellions$4.99
- 5000 Duellions$9.99
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- 12000 Duellions$19.99









